Question

what is the flash point of a fuel​

Answer 1

Fuel Flash point Autoignition temperature

Ethanol (70%) 16.6 °C (61.9 °F) 363 °C (685 °F)

Gasoline (petrol) −43 °C (−45 °F) 280 °C (536 °F)

Diesel (2-D) >52 °C (126 °F) 210 °C (410 °F)

Jet fuel (A/A-1) >38 °C (100 °F) 210 °C (410 °F)

Answer 2

Gasoline (petrol) is a fuel used in a spark-ignition engine. ... To ignite, the fuel must have a low flash point, but in order to avoid preignition caused by residual heat in a hot combustion chamber, the fuel must have a high autoignition temperature. Diesel fuel flash points vary between 52 and 96 °C (126 and 205 °F).